/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:58:03,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:58:03,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:58:03,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:58:03,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 23:58:03,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 23:58:03,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 23:58:03,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 23:58:03,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:58:03,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:58:03,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:58:03,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:58:03,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:58:03,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:58:03,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:58:03,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:58:03,789 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:58:03,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:58:03,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:58:03,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:58:03,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:58:03,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:58:03,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:58:03,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:58:03,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:58:03,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:58:03,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:03,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:58:03,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:58:03,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:58:03,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:58:03,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:58:03,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:58:03,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:58:03,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:58:03,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:58:03,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:58:03,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:58:03,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 23:58:03,997 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 23:58:03,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2022-02-10 23:58:04,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aaec1b76/f5007aabc6ee4d3a977219633c8eaeae/FLAGb43beaad5 [2022-02-10 23:58:04,379 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 23:58:04,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2022-02-10 23:58:04,380 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-10 23:58:04,380 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-10 23:58:04,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aaec1b76/f5007aabc6ee4d3a977219633c8eaeae/FLAGb43beaad5 [2022-02-10 23:58:04,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aaec1b76/f5007aabc6ee4d3a977219633c8eaeae [2022-02-10 23:58:04,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:58:04,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 23:58:04,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 23:58:04,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 23:58:04,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 23:58:04,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec0b490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04, skipping insertion in model container [2022-02-10 23:58:04,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 23:58:04,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 23:58:04,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:58:04,586 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 23:58:04,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:58:04,603 INFO L208 MainTranslator]: Completed translation [2022-02-10 23:58:04,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04 WrapperNode [2022-02-10 23:58:04,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 23:58:04,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:04,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:58:04,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:58:04,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,630 INFO L137 Inliner]: procedures = 12, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2022-02-10 23:58:04,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:04,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:58:04,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:58:04,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:58:04,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:58:04,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:58:04,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:58:04,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:58:04,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (1/1) ... [2022-02-10 23:58:04,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:04,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:04,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 23:58:04,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 23:58:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-02-10 23:58:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 23:58:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-02-10 23:58:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:58:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:58:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 23:58:04,754 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:58:04,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:58:04,843 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:58:04,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:58:04,846 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 23:58:04,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:04 BoogieIcfgContainer [2022-02-10 23:58:04,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:58:04,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:58:04,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:58:04,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:58:04,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 11:58:04" (1/3) ... [2022-02-10 23:58:04,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1431ff24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:58:04, skipping insertion in model container [2022-02-10 23:58:04,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:58:04" (2/3) ... [2022-02-10 23:58:04,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1431ff24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:58:04, skipping insertion in model container [2022-02-10 23:58:04,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:04" (3/3) ... [2022-02-10 23:58:04,862 INFO L112 eAbstractionObserver]: Analyzing ICFG pthreadMutex01-safe.c [2022-02-10 23:58:04,865 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:58:04,865 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-10 23:58:04,921 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:58:04,933 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 23:58:04,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-10 23:58:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-02-10 23:58:04,950 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:04,950 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-02-10 23:58:04,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT] === [2022-02-10 23:58:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-02-10 23:58:04,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:04,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754903863] [2022-02-10 23:58:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:04,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:05,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:05,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754903863] [2022-02-10 23:58:05,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754903863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:05,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:05,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:58:05,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820128166] [2022-02-10 23:58:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:05,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:58:05,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:58:05,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:58:05,067 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:05,076 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-02-10 23:58:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:58:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-02-10 23:58:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:05,081 INFO L225 Difference]: With dead ends: 14 [2022-02-10 23:58:05,081 INFO L226 Difference]: Without dead ends: 6 [2022-02-10 23:58:05,084 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:58:05,088 INFO L934 BasicCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:05,089 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-02-10 23:58:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-02-10 23:58:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2022-02-10 23:58:05,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2022-02-10 23:58:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:05,115 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2022-02-10 23:58:05,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2022-02-10 23:58:05,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:58:05,116 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:05,116 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:58:05,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:58:05,116 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT] === [2022-02-10 23:58:05,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:05,117 INFO L85 PathProgramCache]: Analyzing trace with hash 28697735, now seen corresponding path program 1 times [2022-02-10 23:58:05,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:05,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291080160] [2022-02-10 23:58:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:05,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:05,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291080160] [2022-02-10 23:58:05,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291080160] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:05,175 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:05,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:58:05,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331873429] [2022-02-10 23:58:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:05,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:58:05,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:58:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:58:05,177 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:05,181 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2022-02-10 23:58:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:58:05,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-10 23:58:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:05,182 INFO L225 Difference]: With dead ends: 6 [2022-02-10 23:58:05,182 INFO L226 Difference]: Without dead ends: 0 [2022-02-10 23:58:05,182 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:58:05,183 INFO L934 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:05,183 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:05,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-10 23:58:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-10 23:58:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-10 23:58:05,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2022-02-10 23:58:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:05,185 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-10 23:58:05,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-10 23:58:05,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-10 23:58:05,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-10 23:58:05,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (0 of 2 remaining) [2022-02-10 23:58:05,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:58:05,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-10 23:58:05,195 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-10 23:58:05,195 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-02-10 23:58:05,195 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-02-10 23:58:05,195 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-10 23:58:05,195 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 43) no Hoare annotation was computed. [2022-02-10 23:58:05,195 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONASSERT(line 47) no Hoare annotation was computed. [2022-02-10 23:58:05,196 INFO L854 garLoopResultBuilder]: At program point L49(lines 38 50) the Hoare annotation is: false [2022-02-10 23:58:05,196 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-02-10 23:58:05,196 INFO L858 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2022-02-10 23:58:05,196 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2022-02-10 23:58:05,196 INFO L858 garLoopResultBuilder]: For program point L42-2(lines 42 44) no Hoare annotation was computed. [2022-02-10 23:58:05,198 INFO L733 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-10 23:58:05,199 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:58:05,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:58:05 BoogieIcfgContainer [2022-02-10 23:58:05,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:58:05,214 INFO L158 Benchmark]: Toolchain (without parser) took 797.93ms. Allocated memory is still 189.8MB. Free memory was 137.6MB in the beginning and 126.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-02-10 23:58:05,214 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory was 155.6MB in the beginning and 155.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:58:05,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.11ms. Allocated memory is still 189.8MB. Free memory was 137.4MB in the beginning and 162.9MB in the end (delta: -25.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-02-10 23:58:05,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.76ms. Allocated memory is still 189.8MB. Free memory was 162.9MB in the beginning and 161.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:58:05,221 INFO L158 Benchmark]: Boogie Preprocessor took 8.92ms. Allocated memory is still 189.8MB. Free memory was 161.8MB in the beginning and 160.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:58:05,222 INFO L158 Benchmark]: RCFGBuilder took 207.81ms. Allocated memory is still 189.8MB. Free memory was 160.8MB in the beginning and 151.8MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-10 23:58:05,222 INFO L158 Benchmark]: TraceAbstraction took 365.03ms. Allocated memory is still 189.8MB. Free memory was 151.4MB in the beginning and 126.2MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-02-10 23:58:05,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory was 155.6MB in the beginning and 155.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.11ms. Allocated memory is still 189.8MB. Free memory was 137.4MB in the beginning and 162.9MB in the end (delta: -25.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.76ms. Allocated memory is still 189.8MB. Free memory was 162.9MB in the beginning and 161.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.92ms. Allocated memory is still 189.8MB. Free memory was 161.8MB in the beginning and 160.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.81ms. Allocated memory is still 189.8MB. Free memory was 160.8MB in the beginning and 151.8MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 365.03ms. Allocated memory is still 189.8MB. Free memory was 151.4MB in the beginning and 126.2MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 43]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 47]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-02-10 23:58:05,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...